I purchased the 6D laser face mask and…
I purchased the 4D laser face mask and liked it so much that I purchased the new 6D version. Unfortunately after just a few months of use, the red light device was not activating. I contacted customer service and once it was clear that the problem was not fixable, once I wrote an honest review, Jov's offered to send a new device without me having to go through the hassle of sending the broken one back. That is what I consider good, efficient service.